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Old 04-02-2002, 10:43 AM   #1
WRXVII
Scooby Specialist
 
Member#: 15854
Join Date: Feb 2002
Location: Upstate NY
Vehicle:
2002 WRX
VF34'd...

Exclamation Fuel consumption with MBC

After getting a HPMBC, I am getting significantly lower mpg. Has anyone experienced the same problem? Has this got to do with the partial throttle problem where car experiences high boost levels more often than when my car was stock?
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Old 04-02-2002, 12:10 PM   #2
sube151
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Member#: 3184
Join Date: Dec 2000
Location: Albuquerque, NM
Vehicle:
00 Grp N Wrx STi,
+99 V6 STi,

Default

The wrx runs really rich stock. With the MBC, its
run richer. With altered boost, the computer compensates with its settings differently and runs more fuel with the different boost setting.

At part throttle, you are pushing too much pressure into the engine and not enough fuel. This causes the Exaust gas temps to go up.

So yes, you will use more fuel.
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